Yellowing Drosera alba Under T5 Lights: Heat Stress

Cool‑Growing Sundews Dislike Warm Temperatures

Drosera alba (native to South African coastal mountains) turns yellow when temperatures are too high, even under perfect light. It prefers cool, sunny conditions.

Seasonal Pattern

• Summer: yellowing is common.
• Fall/winter: color returns as temps drop.

If possible, lower the growing temperature (move to a cooler shelf, increase airflow). The plant isn’t dying—just heat‑stressed.